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Vibration Insulation Properties of Resilient Bars in Timber Floors

Smith, Sean; Fairfield, Charles A; Su, Shenzhi


Sean Smith

Charles A Fairfield

Shenzhi Su


As effective, low-cost isolators, resilient bars have become the dominant ceiling treatment for improving the sound insulation of apartment timber floors in the UK to meet increasingly stringent building regulations. There are many variations on the resilient bar theme available on the market, many differing only in their detailed features. Their acoustic performances are not however, consistent. This research investigated the isolating effects of resilient bars from four perspectives: that of their rotational resilience when acting as a spring hinge, considering their base flange as a spring, their ceiling flange as a spring and examining the spring effect provided by the bar in its longitudinal direction. Two types of experiment were designed: vibration transmission tests at 31.5 Hz ⩽ ƒ ⩽ 5000 Hz on a small-scale timber floor model, and static stiffness tests on small resilient bar specimens. Data revealed the relative importance of key features while providing improved design guidance.


Smith, S., Fairfield, C. A., & Su, S. (2011). Vibration Insulation Properties of Resilient Bars in Timber Floors. Building Acoustics, 17, 249-268.

Journal Article Type Article
Publication Date 2011
Deposit Date Apr 17, 2014
Print ISSN 1351-010X
Publisher Multi-Science Publishing
Peer Reviewed Peer Reviewed
Volume 17
Pages 249-268
Keywords Resilient Bars; Timber Floors; Vibration Insulation; Housing;
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